AP yi si what food food said it's a vicious cyce and a highly controversial topic with supporters and detractors, anyways to answer the last question, probably Kha'zix, once people realize they are dumb for jungling as Kz he'll probably be the next qq train,
edit: they finally picked it up, somewhat , Fnatic picked Kz on their match against Tpa in the Ipl and Kha'zix basically made the match for them, however since fnatic also had Katarina mid, eyes were out ofKha'zix and the qq was aimed towards Kat, they didn't even realize that the ridicolous burst damage kat was seemingly doing was actually KZ's doing and giving kat the spotlight by giving her the kill and pretending not being that relevant.

edit 2: apparently the machete is not enough for jungling with KZ and let's say that S3 jungling with him is a bold move, deleted the part in the original post where i assumed it would be viable.